Improvement in hulling-machines



2 Sheets- -Sheet I.

W. SECK.

improvement in Machinesfor Hulling, Cleaning, and Polishing Grain.

Patented May 7,1872.

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W S E C K improvement in Machines for Huiling, Cleaning, and PolishingGrain.

N0. 126,416, Patented May 7,1872.

jinmnhm mifneaa ea UNITED STATES PATENT OFFICE.

WILHELM SECK, OF FRANKFORT, PRUSSIA.

IMPROVEMENT lN HULLlNG-MACHINES.

Specification forming part of Letters Patent No. 126,416, dated May 7,1872.

SPECIFICATION.

To all whom it may concern:

Be it known that I, WILHELM SEOK, of Frankfort, Prussia, Germany, haveinvented a new and useful Machine for Hulling, Oleaning, and PolishingGrain; and I do hereby declare that the following is a full, clear, andexact description thereof, sufficient to enable those skilled in the artto which my invention appertains to make and use the same, referencebeing had to the accompanying drawing making part of this specification,in which Figure 1 represents a side elevation, parts of it broken out;Fig. 2, a horizontal section and top view.

The principal objects of my invention are to obtain a durable, simple,and convenient machine for hulling and cleaning grain, &c., as will bemore fully described in the annexed specification.

The casing or covering consists of a bedplate, A, upon which are securedthe columns 13 and cover 0. To these columns 13 are secured a desirednumber of concentric rings, D, (in this case consisting of eight,) bywhich the whole casing is divided into an equal number of parts. Abouttwo thirds of the circumference of the casing is composed of corrugatedsheet-iron or steel, fitting into recesses or rabbets in the rings D,for securing it; and the other third consists of perforated strips ofsteel. The inner cylinder or drum is secured to the shaft E by thefour-armed spiders or heads F, and to these heads the perforated sieve Gis fastened, and its upper end is closed by a suitable cover. H areradial wings or beater-s on the bar P, let into the drum, and, with thebar, made radially adjustable, to regulate their position with respectto the outer casing. The outer diameter of this drum is aboutthree-fourths of an inch less than the inner diameter of the outercasing, so as to give a space of three-eighths of an inch,circumferentially, when the drum is placed in its central position. Aswill be seen by reference to the drawing, Fig. 1, the heaters projectconsiderably into the compartments formed by the eccentric ringscomposing the casing A. The distance between the lower edges b, Fig. 1,of the heaters H and the rings D of the casing may be regulated byraising or lowering the entire drum G in any of the usual well-knownways. J J, Figs. 1 and 2, represent the bushes of the upright shaft,which do not require any definite description, as well as the pulley K.The rectangular opening L, Sheet 2, represents the hopper, by which thegrain is introduced, and the outlet is shown at M, Sheet 1, fordelivering it. Through the outer perforated case N, Fig. 1, the dust andchaff are blown.

When the drum of the machine is set in motion, by means of the pulley K,at the rate of about three hundred and fifty revolutions per minute, andthe grain is introduced through the hopper, the following results willbe obtained: The grain, falling upon the head of the drum, is thrown bycentrifugal force to the circumference thereof, and is caused to rotatewith said drum by the heaters H. Arrived at the outer edge of the head,they fall into the space a upon the first ring D of the casing, and, asthe centrifugal force ceases here, the grains are collected partly, andmove more slowly. As more kernels fall upon these, they fall over theedge of the rings D through the space, and are again carried around bythe next set of heaters, when the above-described operation is repeateduntil the cleaned grain is carried out at the outlet M. During thisoperation a continuous rubbing of the kernels is occasioned, by whichthey are polished and rubbed, being also cleaned, at the same operation,from all dust and chaff, these being blown through the sieve orperforations of the outer casing N, the openings being, of course, smallenough not to allow the kernels to pass through.

In this manner the bulls, dust, as well as the chaff and smut of thegrain are removed, thereby preventing the specking of the flour. Thekernels are retarded by the corrugations in the outer casing, thefollowing ones are carried forward more rapidly, and the rubbing actionis occasioned.

It will be, of course, understood, that these machines can be made ofany desirable size, and, of course, the casings or cylinders can be madeof sheet-iron, cast-iron, or any other material, as well as steel.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. The combination, in a hulling-machine, of the perforated drum G,radially-adjustable bar and beater l H, and concentric rings D,substantially in the manner and for the purpose specified.

2. The combination of the adjustable beaters H with the concentric ringsD of the outer casing, constructed and arranged as shown and described,for the purpose set forth.

3. The combination and arrangement of the drum G, provided with theseries of adjustable beaters H with the partly-corrugated orpartly-perforated outer casing N, all constructed as herein shown anddescribed, for the purpose set forth.

4. The arrangement, in the hullingmachine herein described, of the drumor inner cylinder G, adjustable beaters H, heads F, shaft E, step J,outer casing N, and pulley K, when all these parts are constructed andoperated as shown and described, for the purpose set forth.

The above specification signed by me this 4th day of October, 1870.

WILHELM SEGK.

Witnesses:

AUGUSTUS GLUss, F. RAUCH.

